package com.brisk.common.utils.file;

import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.brisk.common.config.briskWalkingConfig;
import com.brisk.common.constant.Constants;
import com.brisk.common.exception.file.FileNameLengthLimitExceededException;
import com.brisk.common.exception.file.FileSizeLimitExceededException;
import com.brisk.common.exception.file.InvalidExtensionException;
import com.brisk.common.utils.DateUtils;
import com.brisk.common.utils.StringUtils;
import com.brisk.common.utils.uuid.Seq;
import net.coobird.thumbnailator.Thumbnails;
import org.apache.commons.io.FilenameUtils;
import org.springframework.web.multipart.MultipartFile;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.math.BigDecimal;
import java.nio.file.Paths;
import java.util.Objects;

/**
 * 文件上传工具类
 *
 * @author ruoyi
 */
public class FileUploadUtils {
    /**
     * 默认大小 50M
     */
    public static final long DEFAULT_MAX_SIZE = 200 * 1024 * 1024;

    /**
     * 默认的文件名最大长度 100
     */
    public static final int DEFAULT_FILE_NAME_LENGTH = 100;

    /**
     * 默认上传的地址
     */
    private static String defaultBaseDir = briskWalkingConfig.getProfile();

    public static void setDefaultBaseDir(String defaultBaseDir) {
        FileUploadUtils.defaultBaseDir = defaultBaseDir;
    }

    public static String getDefaultBaseDir() {
        return defaultBaseDir;
    }

    /**
     * 以默认配置进行文件上传
     *
     * @param file 上传的文件
     * @return 文件名称
     * @throws Exception
     */
    public static final String upload(MultipartFile file) throws IOException {
        try {
            return upload(getDefaultBaseDir(), file, MimeTypeUtils.DEFAULT_ALLOWED_EXTENSION);
        } catch (Exception e) {
            throw new IOException(e.getMessage(), e);
        }
    }

    /**
     * 根据文件路径上传
     *
     * @param baseDir 相对应用的基目录
     * @param file    上传的文件
     * @return 文件名称
     * @throws IOException
     */
    public static final String upload(String baseDir, MultipartFile file) throws IOException {
        try {
            return upload(baseDir, file, MimeTypeUtils.DEFAULT_ALLOWED_EXTENSION);
        } catch (Exception e) {
            throw new IOException(e.getMessage(), e);
        }
    }

    /**
     * 文件上传
     *
     * @param baseDir          相对应用的基目录
     * @param file             上传的文件
     * @param allowedExtension 上传文件类型
     * @return 返回上传成功的文件名
     * @throws FileSizeLimitExceededException       如果超出最大大小
     * @throws FileNameLengthLimitExceededException 文件名太长
     * @throws IOException                          比如读写文件出错时
     * @throws InvalidExtensionException            文件校验异常
     */
    public static final String upload(String baseDir, MultipartFile file, String[] allowedExtension)
            throws FileSizeLimitExceededException, IOException, FileNameLengthLimitExceededException,
            InvalidExtensionException {
        int fileNamelength = Objects.requireNonNull(file.getOriginalFilename()).length();
        if (fileNamelength > FileUploadUtils.DEFAULT_FILE_NAME_LENGTH) {
            throw new FileNameLengthLimitExceededException(FileUploadUtils.DEFAULT_FILE_NAME_LENGTH);
        }
        assertAllowed(file, allowedExtension);
        String fileName = extractFilename(file);
        String absPath = getAbsoluteFile(baseDir, fileName).getAbsolutePath();
        String endpoint = ConstantPropertiesUtils.END_POINT;
        String accessKeyId = ConstantPropertiesUtils.KEY_ID;
        String accessKeySecret = ConstantPropertiesUtils.KEY_SECRET;
        String bucketName = ConstantPropertiesUtils.BUCKETNAME;
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
        if (null == ossClient) {
            throw new RuntimeException("上传文件到阿里云服务器异常");
        }
        //如果是图片则要压缩
        if (FileTypeUtils.isImg(fileName)) {
            file.transferTo(Paths.get(absPath));
            File newFile = new File(absPath);
            //commpressPicCycle(absPath, 300 * 1024, 0.9);
            InputStream inputStream = new FileInputStream(newFile);
            ossClient.putObject(bucketName, fileName, inputStream);
            ossClient.shutdown();
            newFile.delete();
        }
//        else if (FileTypeUtils.isVideo(fileName)) {
        //如果是视频的化需要转编码
        //  AudioAttributes audio = new AudioAttributes();
        //  AudioAttributes audio = new AudioAttributes();
//            AudioFormat audioFormat = new AudioFormat();
//            AudioInputStream audioInputStream = new AudioInputStream(file.getInputStream(),)
        //
//            ObjectMetadata objectMetadata = new ObjectMetadata();
//            objectMetadata.setContentType("video/mp4");
//            String fileUrl = "https://" + bucketName + "." + endpoint + "/" + fileName;
//            PutObjectRequest request = new PutObjectRequest(bucketName, fileUrl, newFile, objectMetadata);
//            ossClient.putObject(request);
//            ossClient.shutdown();
//            newFile.delete();
//            AudioFormat format = new AudioFormat(8000, 16, 1, true, false);
//            AudioInputStream audioInputStream = new AudioInputStream(file.getInputStream(),format,file.getSize());
//            ossClient.putObject(bucketName, fileName, audioInputStream);
//            ossClient.shutdown();
//        }
        else {
            System.out.println("上传文件到阿里云OSS开始");
            InputStream inputStream = file.getInputStream();
            ossClient.putObject(bucketName, fileName, inputStream);
            ossClient.shutdown();
        }
        System.out.println("上传文件到阿里云OSS完成：" + "https://" + bucketName + "." + endpoint + "/" + fileName);
        // return getPathFileName(baseDir, fileName);
        return "https://" + bucketName + "." + endpoint + "/" + fileName;
    }


    /**
     * 压缩保存图片
     *
     * @param desPath, desFileSize, accuracy
     * @author PengFei Deng
     * @date 2022/4/28 18:16
     */
    public static void commpressPicCycle(String desPath, long desFileSize, double accuracy) throws IOException {
        File srcFileJPG = new File(desPath);
        if (srcFileJPG.length() < desFileSize) {
            return;
        }
        // 计算宽高
        BufferedImage bim = ImageIO.read(srcFileJPG);
        int desWidth = new BigDecimal(bim.getWidth()).multiply(new BigDecimal(accuracy)).intValue();
        int desHeight = new BigDecimal(bim.getHeight()).multiply(new BigDecimal(accuracy)).intValue();
        Thumbnails.of(desPath).size(desWidth, desHeight).outputQuality(accuracy).toFile(desPath);
        commpressPicCycle(desPath, desFileSize, accuracy);
    }


    /**
     * 编码文件名
     */
    public static final String extractFilename(MultipartFile file) {
        return StringUtils.format("{}/{}_{}.{}", DateUtils.datePath(),
                FilenameUtils.getBaseName(file.getOriginalFilename()), Seq.getId(Seq.uploadSeqType), getExtension(file));
        //    return StringUtils.format("{}/{}.{}", DateUtils.datePath(),
        //           FilenameUtils.getBaseName(file.getOriginalFilename()), getExtension(file));
    }

    public static final File getAbsoluteFile(String uploadDir, String fileName) throws IOException {
        File desc = new File(uploadDir + File.separator + fileName);

        if (!desc.exists()) {
            if (!desc.getParentFile().exists()) {
                desc.getParentFile().mkdirs();
            }
        }
        return desc;
    }

    public static final String getPathFileName(String uploadDir, String fileName) throws IOException {
        int dirLastIndex = briskWalkingConfig.getProfile().length() + 1;
        String currentDir = StringUtils.substring(uploadDir, dirLastIndex);
        return Constants.RESOURCE_PREFIX + "/" + currentDir + "/" + fileName;
    }

    /**
     * 文件大小校验
     *
     * @param file 上传的文件
     * @return
     * @throws FileSizeLimitExceededException 如果超出最大大小
     * @throws InvalidExtensionException
     */
    public static final void assertAllowed(MultipartFile file, String[] allowedExtension)
            throws FileSizeLimitExceededException, InvalidExtensionException {
        long size = file.getSize();
        if (size > DEFAULT_MAX_SIZE) {
            throw new FileSizeLimitExceededException(DEFAULT_MAX_SIZE / 1024 / 1024);
        }

        String fileName = file.getOriginalFilename();
        String extension = getExtension(file);
        if (allowedExtension != null && !isAllowedExtension(extension, allowedExtension)) {
            if (allowedExtension == MimeTypeUtils.IMAGE_EXTENSION) {
                throw new InvalidExtensionException.InvalidImageExtensionException(allowedExtension, extension,
                        fileName);
            } else if (allowedExtension == MimeTypeUtils.FLASH_EXTENSION) {
                throw new InvalidExtensionException.InvalidFlashExtensionException(allowedExtension, extension,
                        fileName);
            } else if (allowedExtension == MimeTypeUtils.MEDIA_EXTENSION) {
                throw new InvalidExtensionException.InvalidMediaExtensionException(allowedExtension, extension,
                        fileName);
            } else if (allowedExtension == MimeTypeUtils.VIDEO_EXTENSION) {
                throw new InvalidExtensionException.InvalidVideoExtensionException(allowedExtension, extension,
                        fileName);
            } else {
                throw new InvalidExtensionException(allowedExtension, extension, fileName);
            }
        }

    }

    /**
     * 判断MIME类型是否是允许的MIME类型
     *
     * @param extension
     * @param allowedExtension
     * @return
     */
    public static final boolean isAllowedExtension(String extension, String[] allowedExtension) {
        for (String str : allowedExtension) {
            if (str.equalsIgnoreCase(extension)) {
                return true;
            }
        }
        return false;
    }

    /**
     * 获取文件名的后缀
     *
     * @param file 表单文件
     * @return 后缀名
     */
    public static final String getExtension(MultipartFile file) {
        String extension = FilenameUtils.getExtension(file.getOriginalFilename());
        if (StringUtils.isEmpty(extension)) {
            extension = MimeTypeUtils.getExtension(Objects.requireNonNull(file.getContentType()));
        }
        return extension;
    }
}
